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MELSEC-Q
7 FUNCTION
(b) Stop program button
Clicking the stop program button displays the following dialog box.
1)
2)
1) Program name
Onl
y the progr
am
, that is s
et at t
he
<Progr
am> ta
b in t
he “(PL
C)
Parameter" dialog box, can be selected.
It is not allowed to enter a program name freely.
2) Stop mode
• Executing "After stop, output stop" for the scan execution type turns
off the output (non-execution processing) at the next scan. The
program is put in the standby status at and after the next scan. (This
operation is the same as performed when the POFF instruction is
executed.)
• Executing "After stop, output stop" for the low speed execution type
suspends the execution of the low speed execution type and turns
off the output at the next scan. The program is put in the standby
status at and after the next scan. (This operation is the same as
performed when the POFF instruction is executed.)
• Executing "After stop, output stop" for the standby program stops the
program after one-scan OFF is executed as scan execution.
For this reason, "Execute count" is also increased by 1.
• "Execute count" is also increased by 1 if an error occurs in the
RET/IRET instruction during execution of one-scan OFF in the
standby program.
At this time, the execution type is "scan execution".
POINT
Depending on the instruction, the output may not turn OFF if "After stop, output
stop" is executed.
For details, refer to the section of the POFF instruction in the following manual.
• QCPU (Q Mode)/QnACPU Programming Manual (Common Instructions)
(4) Precaution
The scan time of a constant scan execution type program being executed is not
displayed on screen, but a dash (-) is displayed in the Scan Time column.
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